Bart becomes depressed about growing older after losing his last baby tooth, and, following advice from Lisa, deals with his problems by writing slogans on T-shirts. These shirts eventually become popular, and Bart goes into business selling them. Meanwhile, Homer tries to create a science fair project for Lisa.

Recap

Couch: After The Simpsons take their usual places on the couch, the couch rises into the air and is revealed to be part of an anglerfish, which swallows the family and swims away.

Episode Quotes

Nelson: Whatcha realizing, jerk?Bart: That I'm not a kid any more.Nelson: That's harsh. I knew I was an adult the day the judge said ‘We're trying you as an adult.'

Marge: We're big fans, Mr. Gladwell.Homer: Yeah, nothing makes parents happier than when an eccentric, single man takes an interest in their child.

Homer: Get back in the garage, old man!Grampa: But there's spiders in the boxes!Homer: Stay out of my boxes!

Cultural References

Fat Man And Little Boy are the code names for the nuclear bombs dropped on Japan. These bombs were the main reason for the end of World War II. There is a Wikipedia article on Fat Man, and one for Little Boy. Keep in mind that they are just code names, and both bombs were about the same size.